Darksteel Axe

Indestructibility is usually the expensive part of a card, the clause you pay a premium to weld onto a body or a board wipe. Here it is bolted to about the cheapest meaningful Equipment going, and the trade it makes is deliberate: you get a permanent that no removal spell saying "destroy" can touch, and in exchange you get the most modest stat boost an Equipment can offer. The +2/+0 does nothing fancy: no evasion rider, no keyword grant, no toughness for surviving combat. What it buys is permanence. Sweepers that scour the board of artifacts by destroying them leave it untouched, and a creature that dies simply drops the axe for the next body to pick up at the equip cost. That resilience is the entire pitch: an aggressive curve that wants its threats to keep hitting after a wrath, a deck that fears artifact removal more than it fears a small clock. This is the bare-minimum end of the Equipment design spectrum, the point Wizards reaches for when they want a +2/+0 stick that refuses to die without making it splashy enough to warp anything. The indestructibility looks like upside until you notice it is the only reason the card exists; strip it away and you have a vanilla power-boosting Equipment no one would run.